Seiko Prospex x Automatic ft. Sumo aka The Black Series (Limited Edition of 3,500 Pieces) Men Diver Round 200m Water Resistant Watch SPB433J1 SPB433 SPB-433 SPB-433J1 Discover the Seiko Prospex Black Series SPB433, a sleek 45.0mm dive watch featuring an all-black DLC-coated case, sapphire crystal, and the reliable 6R35 automatic movement (70h power reserve). With 200m water resistance, Lumibrite markers, and a unidirectional bezel, this limited-edition timepiece blends stealthy aesthetics with professional diving performance - perfect for adventurers and collectors alike. Caliber Number / Movement 6R35 (automatic with manual winding capacity) Power Reserve / Accuracy Approximately 70 hours (+25 to -15 seconds per day) Crystal Sapphire crystal (anti-reflective coating) Luminous LumiBrite on hands, indexes and bezel Case / Band Material Stainless steel (hard coating) case, ceramic bezel insert with stainless steel band (three-fold clasp with secure lock, push-button release with extender) Water Resistance 200m / 660ft diver Case Size Thickness: 13.4 mm Diameter: 45.0 mm Length: 52.6 mm Lug width: 20.0 mm Other Specifications Seiko Prospex x Automatic ft. Sumo aka The Black Series (Limited Edition of 3,500 Pieces) Made in Japan LIMITED EDITION on the case back Serial number engraved on the case back Magnetic resistance (4,800 A/m) Unidirectional rotating bezel Screw-down crown Screw case back 24 jewels Date display Stop second hand function (hacking mechanism) Regular timekeeping (analog display)